Low Profile Load Cell for High Speed In-Motion Weighing
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Solution Overview
Problem
Existing weighing systems are limited in accuracy, reliability, and efficiency, particularly for in-motion weighing of vehicles at high speeds, as they lack a suitable low-profile design that can effectively measure weights while vehicles are moving.
Innovation Solution
A low-profile, elongated load cell with a strip configuration, featuring a rectangular body, unitarily formed legs and a central rail, designed for high-speed in-motion weighing, providing a thin geometry that can be embedded in roadways or surfaces to accurately measure vehicle weights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing weighing systems are used for in-motion weighing, then weighing capability is provided, but accuracy and reliability deteriorate at high speeds
Solution Approach 1:
The load cell is designed with a low profile and strip configuration that allows it to dynamically respond to high-speed vehicle passage. The elongated body with legs and rail structure enables the device to function effectively during rapid loading events at speeds up to 80 mph, transforming the system from static to dynamic operation.
Solution Approach 2:
The invention changes the geometric parameters of the load cell by creating an elongated, thin profile with specific dimensions (length 20.0-78.7 inches, width 2.0-6.0 inches, height 1.465-1.475 inches). This parameter optimization enables accurate measurement at high speeds while maintaining structural integrity.
2Adaptability or versatility
If a low-profile design is implemented, then suitability for in-motion weighing improves, but structural complexity increases
Solution Approach 1:
The load cell merges multiple functional elements into a single unitary structure. The body, legs, and rail are formed as one integrated component, reducing assembly complexity while achieving the low-profile design needed for in-motion weighing applications.
Solution Approach 2:
The elongated load cell structure serves multiple functions simultaneously: it provides the low profile needed for roadway embedding, maintains structural integrity at high speeds, and enables accurate weight measurement. The single structure accomplishes what would otherwise require multiple separate components.
3Measurement precision
If an elongated thin geometry is used, then measurement accuracy at high speed improves, but manufacturing difficulty increases
Solution Approach 1:
The legs and rail are formed unitarily with the body in a single manufacturing operation, eliminating the need for separate fabrication and assembly steps. This merging of components simplifies manufacturing despite the complex elongated thin geometry required for high-speed measurement accuracy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables precise and efficient weighing of vehicles moving at speeds up to 80 miles per hour, offering improved accuracy and reliability compared to existing technologies, making it suitable for high-speed applications.
Implementation Method 1
actuating the load cell and sensing a weight
Data Source
AI summary
A low profile, high capacity load cell suitable for use in connection with in motion weighing or other weighing scales and systems. Also disclosed are scales for use with the load cell, and systems for using the scales. The load cells are especially suited for use in high speed in-motion weighing.